@article{TAC_1999_5_a8,
     author = {L. Gaunce Lewis and Jr.},
     title = {When projective does not imply flat, and other homological anomalies},
     journal = {Theory and applications of categories},
     pages = {202--250},
     publisher = {mathdoc},
     volume = {5},
     year = {1999},
     language = {en},
     url = {http://geodesic.mathdoc.fr/item/TAC_1999_5_a8/}
}